.app-control-form__item {
    .app-form-item__label {
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    &::after{
        position: absolute;
        box-sizing: border-box;
        content: " ";
        pointer-events: none;
        bottom: 0;
        border-bottom: 1px solid #eee;
        transform: scaleY(.5);
    }
    //标签位于顶部
    &.app-control-form__item--top{
        display: block;
    }
    //标签位于右部
    &.app-control-form__item--right{
        flex-direction: row-reverse;
    }
    //标签位于底部
    &.app-control-form__item--bottom{
        flex-direction: column-reverse;
    }
}